Miniature & Extra Small Ball Bearings
633 ZZ Bearing
4 × 7 × 2 mm
Also written 633/ZZ
633 ZZ is the 633 miniature & extra small ball bearing (4 mm bore, 7 mm outside diameter) with the option ZZ. The standard-design dimensions below come from our MX-2 series table.
633 ZZ Specifications
Standard-design values for 633. Load and speed ratings can differ for sealed or special versions; we confirm them on quotation.
| Bearing No. | 633 |
|---|---|
| d (Bore) | 4 mm |
| D (Outer Dia.) | 7 mm |
| B (Width) | 2 mm |
| Dynamic Load | 283 N |
| Static Load | 103 N |
| Max. RPM | 61,200 |
| Weight | 0.24 g |
| Series | Open Type Miniature & Extra Small Ball Bearings (3mm–5mm bore) |
Reading the Designation 633 ZZ
| 633 | Base size: miniature & extra small ball bearing, 4 × 7 × 2 mm. |
|---|---|
| ZZ | metal shields on both sides |
Suffix meanings vary slightly between manufacturers (SKF, FAG, NTN, NSK and others each have their own codes), so we always confirm the exact designation before supplying.
Other Bearings with a 4 mm Bore
633 ZZ — Frequently Asked Questions
What are the dimensions of the 633 ZZ bearing?
The base size 633 measures 4 × 7 × 2 mm (bore × outside diameter × width). Suffixes such as ZZ change the sealing, clearance, cage or special treatment but not the boundary dimensions of the standard design.
What does 633 ZZ mean?
633 is the base size. ZZ: metal shields on both sides. Suffix meanings can differ slightly between manufacturers, so confirm the exact designation with us before ordering.
Can you supply the 633 ZZ bearing across India?
Yes. Share the exact designation, quantity and preferred brand through the quote button and our technical team will confirm availability and pricing within one business day.
Can’t find your size?
We supply sizes, brands and special versions of miniature & extra small ball bearings that are not listed on this page. Type the exact size or designation you need and send it to us for a quote.
Need pricing on 633 ZZ?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.